Autor según el artículo: Ramos, Ezequiel Rodriguez; Leyva, Ramon; G. Farivar, Glen; Tafti, Hossein Dehghani; Townsend, Christopher D.; Pou, Josep;

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

Autor/es de la URV: Leyva Grasa, Ramon

Palabras clave: Static compensator (statcom) Statcom Predictive control Power converters Multilevel converter Multi-input global tracking Incremental passivity Grid synchronization Cascaded h-bridge (chb) Capacitors Boost converter Bilinear system control

Resumen: A low-capacitance static compensator (LC-StatCom) based on a cascaded H-bridge (CHB) multilevel converter can be an efficient and low-cost solution for reactive power compensation in power grids. However, the reduced capacitance, and, therefore, faster capacitor voltage dynamics, makes it challenging to control it. Classical cascade control schemes, in which the bandwidths associated with the inner current loop and the outer capacitor voltage loop need to be separated enough, are the most reported approaches. Nevertheless, for the LC-StatCom case, the voltage loop can be almost as fast as that one of the current loop. For this reason, this article proposes a control approach that does not separate voltage and current dynamics. Concretely, we propose a multi-input linear time-variant control law, based on incremental passivity theory for CHB multilevel converters. The proposed control guarantees stability despite saturation in the control signal. In addition, it provides capacitor voltage balance without the need to use a specific balancing stage. This article, first, reviews the average model of the converter and, then, analyses the steady-state dynamic behavior to determine the desired and coherent reference signals. Then, it applies an incremental passivity control approach to drive the LC-StatCom state variables to the desired references. After introducing the proposed control law, experimental results on a seven-level 1-kVA CHB LC-StatCom are shown to demonstrate its excellent performance in steady state and transients.

Áreas temáticas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 0885-8993

Direcció de correo del autor: ramon.leyva@urv.cat

Identificador del autor: 0000-0001-6431-3688

Página final: 8778

Fecha de alta del registro: 2023-02-19

Volumen de revista: 35

Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion

Enlace a la fuente original: https://ieeexplore.ieee.org/document/8954665

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Ieee Transactions On Power Electronics. 35 (8): 8766-8778

Referencia de l'ítem segons les normes APA: Ramos, Ezequiel Rodriguez; Leyva, Ramon; G. Farivar, Glen; Tafti, Hossein Dehghani; Townsend, Christopher D.; Pou, Josep; (2020). Incremental Passivity Control in Multilevel Cascaded H-Bridge Converters. Ieee Transactions On Power Electronics, 35(8), 8766-8778. DOI: 10.1109/TPEL.2020.2965164

DOI del artículo: 10.1109/TPEL.2020.2965164

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2020

Página inicial: 8776

Tipo de publicación: Journal Publications